It is possible to knit the whole case with dpn’s, although I do not recommend this (especially for beginners) as it makes maintaining tension more difficult.

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Materials can be bought in all independent yarn and haberdashery shops, some pound and Chinese shops, selected department stores and also online. If you are unsure of what to pick, be sure to ask for help at the time of buying; most shop assistants are lovely and only too willing to help.